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Unipolar and Bipolar Linear Power Supplies and High Voltage Bipolar Power Supplies

Overview:
(The values in this table are edge-values for the resp. type range. The adjustment range for the power supplies usually is beginning from zero.)

Power supply type range

Design principle

 Vmin
Volts		 Vmax
Volts		 Imin
Amps 		Imax
Amps		 Pmin
Watts		 Pmax
Watts

NLN

 Linear regulated power supply 6.5 500 0.06 120 35 1400
NLB Linear regulated bipolar power supply ± 6.5 ± 350 ± 0.1 ± 120 35 1400
HCB Bipolar switch mode power supply ± 1250 ± 20000 ± 0.001 ± 0.01 1.4 200
The following links may be also of interest:
Low Voltage Power Supplies:
NTN

Linear regulated power supply with thyristor pre-regulation

 6,5 350 0,5 4000 35 100000
 
 
Series NLN ...

Printer friendly data sheet (PDF)

Features:
  • Output voltage and output current are fast programmable
    (If no high regulation speed is necessary, we recommend to use our NTN- Range.)
  • No output capacitor
  • All units are short circuit proof and allow unlimited operation with full current in short circuit condition
  • Voltage and current regulation with automatic and sharp transition; c
  • Voltage and current setting with 10-turn potentiometers with precision scale; the adjusting knob can be locked
  • 4½ digit DVM for voltage and current (at ½19" units switch-selected)
  • Sensor terminals for the compensation of voltage drop on the load lines, for units up to 350 V nominal voltage.
    The rated voltage always refers to the output terminals
  • Suitable for inductive and capacitive loads
  • Standard starting current limitation from 700 W nominal power onwards

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Function:

The mains voltage is transformed to the appropriate level and rectified. The rectified voltage charges a bank of capacitors of the intermediate circuit to a constant voltage, which it is given via a set of power transistors to the output. The serial transistor defines the final stability of the output voltage and the regulation speed. Optionally a set of power transistors parallel to the output can  act as a current sink to provide active pull down ability. The design of linear regulated power supplies is optimized for fast programming speed.

Design:

For  35 W nominal power - ½19" table-top case, 
other models - 19" table-top case (19" rack adaptors available)
Cooling: Convection or built-in fan with air outlet on the rear

Output:

Output isolation:
 The output is floating. Operating voltage with respect to earth: max. ±500 V. One of the output terminals may be connected to earth.
Output terminals:
4 mm safety connectors up to 20 A on the rear panel. For higher currents clamps installed on the rear

Technical Data:

  • Mains connection:
    up to 1400W nominal power:  230 V ±10% 47 Hz to 63 Hz
    for 2800W and higher:  400 V ±10% 47 Hz to 63 Hz, three-phase
 

  • Ambient temperature: 0°C to +40°C

 
  • Power loss: at nominal load approx. 25%, during short circuit at nominal current approx 125% of the nominal power.
 

  • The following data applies for voltage and current regulation, and refers to the rated value (if not stated otherwise):
    (For explanations please refer to the Terms & Definitions page.)

    Setting range: 

    		 from approx. 0,1% to 100%

    Reproducibility:

    ±1 x 10-4

    Setting resolution (potentiometer): 

    ±1 x 10-3

    Residual ripple:

    <5 x 10-4pp + 10 mVpp
    Recovery time: <50 µs for load changes from 10% to 100% or from 100% to 10%
    Setting time at nominal load:  <1 ms for full range

    Deviation: 
    for ±10% mains voltage variation:
    for no load / full load:
    over 8 h under constant conditions:
    within the temperature range:


    <± 2 x 10-5
    <2 x 10-4
    <±2 x 10-4
    <±2 x 10-4 / K
 

Possible Options:

More options and special solutions on request. Some options may involve changes to the description of the unit - especially concerning the mechanical design.

NLN Data Sheet:

Zur Darstellung muss der ADOBE READER installiert werden!

 

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For prices please ask us or one of our representatives.

 

 
Series NLB ...

Printer friendly data sheet (PDF)

Features:
  • Output voltage and output current are fast programmable
  • No output capacitor
  • All units are short circuit proof and allow unlimited operation with full current in short circuit condition
  • Voltage and current regulation with automatic and sharp transition; c
  • Voltage and current setting with 10-turn potentiometers with precision scale; the adjusting knob can be locked
  • One of the potentiometers is used for voltage or current regulation, the limiting values can be adjusted in addition
  • 4½ digit DVM for voltage and current (at ½19" units switch-selected)
  • Sensor terminals for the compensation of voltage drop on the load lines, for units up to 350 V nominal voltage.
    The rated voltage always refers to the output terminals
  • Suitable for inductive and capacitive loads
  • 4-quadrant operation is possible for passive loads (and optionally for active loads)
  • Standard starting current limitation from 700 W nominal power onwards

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Function:

Bipolar linear regulated power supplies consist of two intermediate circuits, one for each polarity. The mains voltage is transformed to the appropriate level and rectified. The rectified voltage charges a bank of capacitors of the intermediate circuit to a constant voltage, which it is given via a set of power transistors to the output. The output stages of the positive and the negative circuit are switched together in a push-pull manner. The regulation transistors define the final stability of the output voltage and the regulation speed. Bipolar power supplies are possible to operate as a kind of 4 quadrant power amplifier. (optionally also for active loads).

Design:

  • 19" table-top case (19" rack adaptors available)
  • Cooling: Convection or built-in fan with air outlet on the rear

Output:

  • Output isolation:
    The output is floating. Operating voltage with respect to earth: max. ±500 V. One of the output terminals may be connected to earth.
  • Output terminals:
    4 mm safety connectors up to 20 A on the rear panel. For higher currents clamps installed on the rear

Technical Data:

  • Mains connection:
    up to 1400W nominal power:  230 V ±10% 47 Hz to 63 Hz
    for 2800W and higher:  400 V ±10% 47 Hz to 63 Hz, three-phase
 

  • Ambient temperature: 0°C to +40°C

  • Power loss: at nominal load approx. 35%, during short circuit at nominal current approx 140% and at no load approx. 15% of the nominal power.
 

  • The following data applies for voltage and current regulation, and refers to the rated value (if not stated otherwise):
    (For explanations please refer to the Terms & Definitions page.)

    Setting range: 

    		 from -100% to +100%

    Reproducibility:

    ±2 x 10-4

    Setting resolution (potentiometer): 

    ±2 x 10-3

    Residual ripple:

    <5 x 10-4pp + 10 mVpp
    Recovery time: <50 µs for load changes from 10% to 100% or from 100% to 10%
    Setting time at nominal load:  <1 ms for full range

    Deviation: 
    for ±10% mains voltage variation:
    for no load / full load:
    over 8 h under constant conditions:
    within the temperature range:


    <± 2 x 10-5
    <2 x 10-4
    <±2 x 10-4
    <±2 x 10-4 / K
 

Possible Options:

More options and special solutions on request. Some options may involve changes to the description of the unit - especially concerning the mechanical design.

NLB Data Sheet:

Zur Darstellung muss der ADOBE READER installiert werden!

 

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For prices please ask us or one of our representatives.

 

 
Series HCB ...

Printer friendly data sheet (PDF)

Features:
  • Light-weight
  • In units with 6,5 kV and higher the HV-components are moulded in (removable) silicon resin
  • Unlimited operation with rated current in a short-circuit condition
  • Unlimited operation with nominal power
  • Voltage regulation and current limitation with automatic, sharp transition
  • Control mode indicated by LED
  • Voltage adjustment with 10-turn potentiometers with precision scale; the adjusting knob can be locked
  • 4½ digit DVM for voltage and current
  • 4- quadrant operation possible (for passive loads)
  • Suitable for capacitive and resistive loads

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Function:

Bipolar HV power supplies consist of 2 switch-mode controlled HV sources which are connected to the output. In principle, the rectified line voltage in each source drives a square wave generator of fixed frequency, whose AC voltage is transformed, rectified and filtered, producing the positive or negative output voltage. For regulation, the square wave voltage is pulse width modulated. The operation is contra-moving, and the output can be adjusted with continuous zero crossing.

Design:

  • 19" table-top case (19" rack adaptors available)

Output:

  • Output isolation:
    One output terminal each leads the high voltage, the  "0V" terminal is connected firmly to earth. If required, the "0V" terminal can be made floating against earth up to ± 300V.
  • Output terminals:
    All output terminals are located at the rear plate of the unit. High voltage connectors with the appropriate dielectric strength are delivered with the power supply.

Technical Data:

  • Mains connection: 230 V ±10% 47 Hz to 63 Hz
 

  • Ambient temperature: 0°C to +40°C

 

  • The following data applies for voltage and current regulation, and refers to the rated value (if not stated otherwise):
    (For explanations please refer to the Terms & Definitions page.)

    Setting range: 

    		 from -100% to +100%

    Reproducibility:

    ±1 x 10-4

    Setting resolution (potentiometer): 

    ±1 x 10-3

    Residual ripple:

    <3 x 10-4pp + 50 mVpp, typ. 2 x 10-4pp
    Recovery time for voltage control: <1 ms for load changes from 10% to 100% or from 100% to 10%
    Setting time at nominal load:  <200ms for changes of the output voltage from 10% to 90% or 90% to 10%

    Deviation: 
    for ±10% mains voltage variation:
    for no load / full load:
    over 8 h under constant conditions:
    within the temperature range:


    <± 2 x 10-5
    <2 x 10-4
    <±2 x 10-4
    <±2 x 10-4 / K
 

Possible Options:

More options and special solutions on request. Some options may involve changes to the description of the unit - especially concerning the mechanical design.

HCB Data Sheet:

Zur Darstellung muss der ADOBE READER installiert werden!

 

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For prices please ask us or one of our representatives.

Please don't hesitate to contact us, if you don't find for what you are searching. We will be happy, to offer a solution, tailored especially to your needs.

Examples for customer specific solutions

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zur deutschen Version

 22.10.12 08:28

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